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and air intake. If the results indicate different diameters,
use the larger of the two for both the vent and air intake.
Under no circumstances should the vent and air
intake pipe size be different in diameter.
For installation
details, refer to the appropriate section in pages 11 – 15
for the unit model and type of installation.
Horizontal Venting
The vent for this appliance shall not terminate over public
walkways; or near soffit vents or crawl space vents or
other areas where condensate or vapor could create a
nuisance or hazard or cause property damage; or where
condensate vapor could cause damage or could be
detrimental to the operation of regulators, relief valves, or
other equipment. See Figures 5 and 6 on pages 9 and 10
for additional information on where the horizontal vent
terminal can and cannot terminate.
For horizontal venting in situations where clearance to
floor joists is limited, see
Horizontal Venting – Low
Clearance Installations
on page 15.
